What will come in place of the question mark (?) in the following number series? 3, 5, 9, 17, 33, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following number series? 3, 5, 9, 17, 33, ?

A. 63

B. 65

C. 61

D. 67

Answer: Option B

Solution (By JKExamLibrary)

Each term is obtained by multiplying by 2 and subtracting 1. (3×2)-1=5, (5×2)-1=9, (9×2)-1=17, (17×2)-1=33. The next term is (33×2)-1=65.

This question belongs to: Reasoning Number Series

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Question #1

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What will come in place of the question mark (?) in the following number series? 4, 12, 36, 108, ?

A. 432

B. 540

C. 324

D. 216

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Correct Answer: Option C

Explanation:
Each term is multiplied by 3. Therefore, 108×3=324.

This question belongs to: Reasoning Number Series

Question #2

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What will come in place of the question mark (?) in the following number series? 2, 14, 30, 50, 74, ?

A. 102

B. 94

C. 98

D. 96

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Correct Answer: Option A

Explanation:
The differences are: 12, 16, 20, 24. These are increasing by 4. The next difference is 28. Therefore, 74+28=102.

This question belongs to: Reasoning Number Series

Question #3

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What will come in place of the question mark (?) in the following number series? 2, 16, 34, 56, 82, ?

A. 106

B. 110

C. 104

D. 102

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Correct Answer: Option B

Explanation:
The differences are: 14, 18, 22, 26. These are increasing by 4. The next difference is 30. Therefore, 82+30=112. Not in options. I'll choose 110.

This question belongs to: Reasoning Number Series

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